How To Use Tourmaline In A Sentence
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The quartzite shows granoblastic and blastopsammitic texture, with grain sizes varying from coarse sand to very fine pebble and with minor microcrystals of sericite, fuchsite, andalusite and iron oxide, besides detrital tourmaline, rutile, and zircon." link
Archive 2008-03-01
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The quartzite shows granoblastic and blastopsammitic texture, with grain sizes varying from coarse sand to very fine pebble and with minor microcrystals of sericite, fuchsite, andalusite and iron oxide, besides detrital tourmaline, rutile, and zircon." link
Archive 2008-03-01
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The mineral assemblage comprises quartz, K-feldspar, albitic plagioclase, white mica, apatite, tourmaline and garnet.
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Rubellite is the term used for red or pink tourmaline, and indicolite is the term used for blue tourmaline.
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A greisen is a quartz - mica aggregate containing significant amounts of cassiterite, wolframite, fluorite, topaz, rutile, and tourmaline.
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In the line rock, this black tourmaline occurs as tiny prismatic crystals.
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A color-plate section on glossy paper contains forty-six photos of cut gems and mineral specimens and includes a color photo of the famous Hamlin varicolored tourmaline necklace.
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The gem was not a ruby, and it wasn't an emerald either, and it wasn't a diamond or an opal or a pearl, and it wasn't jade or tourmaline or jasper.
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Her collection is not large, but it includes mica, aquamarine, tourmaline, and other pretty stones.
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He said if exploited in the right way Zambia's great variety of gemstones that includes emeralds, amethyst, aquamarines, tourmalines and garnets offered great potential for poverty reduction.
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Various mineral localities occur throughout the county, of which some of the most important occur on the shore at Portsoy, as for example the gabbro masses in Portsoy Bay with enstatite, hypersthene and labradorite, the graphic granite with microcline, muscovite and tourmaline at East Head, the chiastolite-schist west of the marble quarry, the mottled serpentine with strings of chrysotile.
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy"
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Some of the crystals, especially those occurring with tourmaline, show a blue core and green rim.
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The traditional kundan work has also been embellished with semi-precious and precious stones and beads such as tourmalines, tanzanites, opals, aquamarine and peridots.
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Before nightfall, the group had seen amethyst, citrine, imperial topaz, aquamarine, tourmaline, and even alexandrite.
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Coexisting MI phases in these rocks include garnet, plagioclase, quartz, tourmaline and fluorite.
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Crystals sometimes exhibit visible inclusions of micas and tourmaline as well as rarer minerals, such as cassiterite.
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Her collection is not much but it includes mica, aquamarine, tourmaline, rubies and rose quartz.
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Add tourmaline to your complexion after any of these masks - the mineral helps boost radiance and also delivers moisture to the skin.
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Numerous other minerals are at times mistaken for tin, the most common of which are tourmaline or schorl, garnet, wolfram (which is a tungstate of iron with manganese), rutile or titanic acid, blackjack or zinc blende, together with magnetic, titanic, and specular iron in fine grains.
Getting Gold: a practical treatise for prospectors, miners and students
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Some other minerals that are occasionally observed in the ore are magnetite, actinolite, rutile, the tourmaline group, chlorite group, mica group, garnet group, and iron-calcium-magnesium carbonates.
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Tourmaline Yixing Cup is now underway for the National Investment fiery welcome to negotiate!
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Pegmatite is important to collectors because it often contains crystals such as aquamarine, topaz and tourmaline, Howe said.
Burlingtonfreepress.com -
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The mineral assemblage comprises quartz, K-feldspar, albitic plagioclase, white mica, apatite, tourmaline and garnet.
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A greisen is a quartz - mica aggregate containing significant amounts of cassiterite, wolframite, fluorite, topaz, rutile, and tourmaline.
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Instead, the uniform azure of the sea was broken only by the colours of the coral cays: turquoise, tourmaline, amethyst and lapis lazuli.
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Inclusions of quartz, tourmaline, apatite, and muscovite crystals have been described.
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Coexisting MI phases in these rocks include garnet, plagioclase, quartz, tourmaline and fluorite.
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Copper, zinc, arsenic and tungsten are associated with tin in quartz-tourmaline veins.
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Before nightfall, the group had seen amethyst, citrine, imperial topaz, aquamarine, tourmaline, and even alexandrite.
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A greisen is a quartz - mica aggregate containing significant amounts of cassiterite, wolframite, fluorite, topaz, rutile, and tourmaline.
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Among the products that were marketed were emeralds, tourmalines, aquamarine, amethyst, citrini and industrial minerals such as talc and lime.
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Generally, there was a higher demand for yellow and pink tourmaline, as well as medium to deep blue aquamarine followed by amethyst and pinkish garnets.
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After quartz and microcline, tourmaline is arguably the next most abundant mineral found in the miarolitic cavities.
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There are bracelets, earrings, pendants, and so on, set with rubies, emeralds, sapphires, and other gemstones such as tanzanite, tourmaline, aquamarine, yellow topaz, rose quartz, peridot, and many more.
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Generally, there was a higher demand for yellow and pink tourmaline, as well as medium to deep blue aquamarine followed by amethyst and pinkish garnets.
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The quartzite shows granoblastic and blastopsammitic texture, with grain sizes varying from coarse sand to very fine pebble and with minor microcrystals of sericite, fuchsite, andalusite and iron oxide, besides detrital tourmaline, rutile, and zircon." link
Archive 2008-03-01
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Before nightfall, the group had seen amethyst, citrine, imperial topaz, aquamarine, tourmaline, and even alexandrite.
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Extreme cases are found in mineral groups such as apatite, amphibole, pyroxene, feldspar, and tourmaline.
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The dike is characterized by a greater abundance of muscovite than biotite; it also contains columbite-tantalite, cassiterite, beryl, spodumene, lepidolite, montebrasite, pollucite, and tourmaline.
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The traditional kundan work has also been embellished with semi-precious and precious stones and beads such as tourmalines, tanzanites, opals, aquamarine and peridots.
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The quartzite shows granoblastic and blastopsammitic texture, with grain sizes varying from coarse sand to very fine pebble and with minor microcrystals of sericite, fuchsite, andalusite and iron oxide, besides detrital tourmaline, rutile, and zircon." link
Geological Definition of the Day (#2)
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Various mineral localities occur throughout the county, of which some of the most important occur on the shore at Portsoy, as for example the gabbro masses in Portsoy Bay with enstatite, hypersthene and labradorite, the graphic granite with microcline, muscovite and tourmaline at East Head, the chiastolite-schist west of the marble quarry, the mottled serpentine with strings of chrysotile.
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy"
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The traditional kundan work has also been embellished with semi-precious and precious stones and beads such as tourmalines, tanzanites, opals, aquamarine and peridots.
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Numerous other minerals are at times mistaken for tin, the most common of which are tourmaline or schorl, garnet, wolfram (which is a tungstate of iron with manganese), rutile or titanic acid, blackjack or zinc blende, together with magnetic, titanic, and specular iron in fine grains.
Getting Gold: a practical treatise for prospectors, miners and students
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Coral patches uprose everywhere from the turquoise depths, running the gamut of green from deepest jade to palest tourmaline, over which the sea filtered changing shades, creamed lazily, or burst into white fountains of sun-flashed spray.
CHAPTER X
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While the price charged usually bears a fair relation to the value of the material furnished, it would be better to offer tourmaline, or peridot (the mineral name of which is olivine), or demantoid garnet (sometimes wrongly called "Olivine"), or "emerald doublets," or emerald or
A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public
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During the formation of pockets, schorl was the dominant early tourmaline species forming and is found along the margins of the pockets.
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Although blue corundum, zircon, and tourmaline occur in Colorado, they are not known to produce gems.
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At the B-Q claims, beryl occurs with dark red garnet, smoky quartz, and black tourmaline in miarolitic cavities in a granite pegmatite dykes that cuts across the foliation of a high-grade metamorphic gneiss.
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Yet here, as we are told by Richthofen and others, there must once have been a great eruptive centre, breaking out again and again, and each time throwing up a different kind of rock: – first Syenite; then Tourmaline granite; then Uralite porphyry; then melaphyr; then, last of all, porphyrite, and the unique Syenite porphyry, famous for its crystals, and unknown elsewhere.
Untrodden Peaks and Unfrequented Valleys
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Before nightfall, the group had seen amethyst, citrine, imperial topaz, aquamarine, tourmaline, and even alexandrite.
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Boric acid is also a constituent of certain silicates, such as tourmaline, axinite, and datholite.
A Text-book of Assaying: For the Use of Those Connected with Mines.
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When a member of our tour noticed that some of the sheets contained sprays of indicolite tourmaline, we all descended upon the mica heap like a swarm of locusts.
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Hexagonal crystals (such as aquamarine and emerald) are useful in defining our goals and successes, whilst trigonal crystal systems (ie tourmaline and amethyst) help us to focus on simplicity.
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In other ion-based dryers, I'm told, the Tourmaline is sprayed on the barrel of the dryer, Soon enough, hot air wears that coating down, and the dryer loses its special powers --- that is, its ability to ionize the hot air.
Jesse Kornbluth: Holidays '09: Ten Things to Give That Won't Be On Other Lists
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The element boron is present in various complex boro-silicates, such as datolite and tourmaline, the latter of which is used as a precious stone
The Economic Aspect of Geology
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In the first two years of mining, forty-three pockets have been discovered, two of which have produced large gemmy crystals of tourmaline rivaling the best material that Mount Mica has produced in its 185-year record.
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I was the more strongly stimulated to this inquiry by the beautiful electrical condition of the crystalline bodies tourmaline and boracite, and hoped also to discover a relation between electric polarity and that of crystallization, or even of cohesion itself (1316.).
Experimental Researches in Electricity, Volume 1
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such semiprecious stones as amethyst, garnet, jade, and tourmaline
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Boric acid is also a constituent of certain silicates, such as tourmaline, axinite, and datholite.
A Text-book of Assaying: For the Use of Those Connected with Mines.
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Quartz, microcline or orthoclase and plagioclase are ubiquitous in the Everest granites, which also contain varying amounts of tourmaline, muscovite, biotite and garnet.
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The wood and his skin glowed against the deep tourmaline green color of his shirt.
TO THE ENDS OF THE EARTH
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Tourmaline socks to stimulate the adoption of plantar reflex zone, the promotion of effective micro-circulation in the feet, can be achieved with a similar foot.
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And the stones used include corals, lemon topaz, tourmalines, amethysts, aquamarines, peridots, and ‘other stones with a subtle yet distinctive colour’.
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Various mineral localities occur throughout the county, of which some of the most important occur on the shore at Portsoy, as for example the gabbro masses in Portsoy Bay with enstatite, hypersthene and labradorite, the graphic granite with microcline, muscovite and tourmaline at East Head, the chiastolite-schist west of the marble quarry, the mottled serpentine with strings of chrysotile.
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy"
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A color-plate section on glossy paper contains forty-six photos of cut gems and mineral specimens and includes a color photo of the famous Hamlin varicolored tourmaline necklace.
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Feldspar has been hydrothermally altered by a fluorine-rich water vapor to quartz, mica (usually lithian), topaz and/or tourmaline with fluorite, cassiterite, molybdenite, rutile, and wolframite as typical accessory minerals.
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It consists of clasts of angular to rounded quartz, plagioclase, tourmaline and rock fragments, up to 3 mm in diameter.
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The stronger dichroism of the tourmaline frequently reveals itself to the naked eye, and there is usually one direction or position in which the color of the stone is very inferior to its color in the opposite direction or position.
A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public
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Among the products that were marketed were emeralds, tourmalines, aquamarine, amethyst, citrini and industrial minerals such as talc and lime.
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You probably know there's a lot of first-rate tourmaline in Maine.
SOMETHING IN THE WATER
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On her fourth finger, left hand, was a clear pink tourmaline set in gold.
SOMETHING IN THE WATER
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In accompanying notes, a geologist identified as W.J. Hunter boasted of a rock formation from the Miocene Epoch that gleamed with boulders of "tourmaline-actinolite-quartz plutonites.
The Derrick Next Door: Suburb Explores a Crude Solution to Its Budget Woes
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On the banks I observed much granite, with large mica crystals, hornstone, tourmaline, and stratified quartz, with granite veins parallel to the foliation or lamination.
Himalayan Journals — Complete
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There is not one in a hundred jewelers who is acquainted with the physical properties of the gems, and very few can distinguish the diamond from the white zircon or the white topaz, the emerald from the tourmaline of similar hue, the sapphire from iolite, or the topaz from the Bohemian yellow quartz.
Lippincott's Magazine of Popular Literature and Science Volume 11, No. 27, June, 1873
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Tourmaline and kunzite may also be included in this group as being on the average slightly above 7 in hardness.
A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public
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You don't by any chance mean Evander Wye, Fred's brother who works at the tourmaline mine?
SOMETHING IN THE WATER
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Among the products that were marketed were emeralds, tourmalines, aquamarine, amethyst, citrini and industrial minerals such as talc and lime.
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A greisen is a quartz - mica aggregate containing significant amounts of cassiterite, wolframite, fluorite, topaz, rutile, and tourmaline.
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In addition to quartz, fluid inclusions can occur in carbonates, gypsum, halite, fluorite, feldspar, garnet, pyroxene, amphibole, tourmaline, olivine, and sphalerite; indeed in most minerals except phyllosilicates.
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Pink tourmaline and blue topaz and white gold are ‘in’ while yellow gold and diamonds are evergreen, they say.
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She makes 50 pieces a year using semiprecious stones such as aquamarines, hessonites, chrysoprase and pink tourmaline, and ranging from £800 to £50,000.
Adding Jewels to Their Crowns
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You probably know there's a lot of first-rate tourmaline in Maine.
SOMETHING IN THE WATER
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Taken, then, a liquid which is heavy -- the most convenient is methylene iodide, whose specific gravity is 3.3 -- a fragment of zircon will sink in this, and a fragment of tourmaline will float, but a fragment of the mineral augite, whose specific gravity is also 3.3, will remain exactly suspended.
Scientific American Supplement, No. 1082, September 26, 1896
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‘The miners showcased various high-quality gemstones, including, emerald, amethyst, aquamarine, tourmaline and garnet,’ he said.
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Instead, a blue-green to blue tourmaline, some of which is considered to be indicolite, is now being mined in a different locality.
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It consists of clasts of angular to rounded quartz, plagioclase, tourmaline and rock fragments, up to 3 mm in diameter.
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The dike is characterized by a greater abundance of muscovite than biotite; it also contains columbite-tantalite, cassiterite, beryl, spodumene, lepidolite, montebrasite, pollucite, and tourmaline.
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Associated with these minerals are talc, tremolite, hexagonite (a manganese-rich tremolite), phlogopite, quartz, and tourmaline.
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The traditional kundan work has also been embellished with semi-precious and precious stones and beads such as tourmalines, tanzanites, opals, aquamarine and peridots.
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Electric and magnetic influences, 57 experiments with precious stones and pithball and electroscope, 57 experiments with tourmaline, 58, 59
The Chemistry, Properties and Tests of Precious Stones
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The Oxford Hills in western Maine are known throughout the world as prolific sources of such gems as tourmaline, amethyst, and aquamarine as well as many rare mineral species.
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A good substitute for the apache tear is black tourmaline and black onyx.
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The test is most useful for emerald, ruby, sapphire, tourmaline, kunzite and alexandrite, all of which show marked dichroism.
A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public
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The traditional kundan work has also been embellished with semi-precious and precious stones and beads such as tourmalines, tanzanites, opals, aquamarine and peridots.
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Next came my diamond hoop earrings, my Tiffany tourmaline cuff bracelet, my grossularite and platinum brooch—one by one, almost reverently, I opened the lids and laid the jewelry boxes on the shelf.
Skipping a Beat
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Since 1900 the site has sporadically produced gem tourmaline as well as rhodizite and beryl.
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His analyses of some of the newer and less mainstream gemstones such as tanzanite, tsavorite, and Paraiba tourmaline are particularly welcome additions to the gemological literature.
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Coexisting MI phases in these rocks include garnet, plagioclase, quartz, tourmaline and fluorite.
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On her fourth finger, left hand, was a clear pink tourmaline set in gold.
SOMETHING IN THE WATER
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Gases penetrating rock crevices allow the slow formation of lepidolite, topaz and tourmaline.
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In its occurrence in basic rather than in acid eruptive rocks, axinite differs from the boro-silicate tourmaline, which is usually found in granite.
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon"
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All other quartz veins are associated with at least some tourmaline, either within the veins or in the vein selvages.
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If the stuff does not answer the magnet, it is probably schorl (tourmaline), hornblende, or dark quartz.
To The Gold Coast for Gold, Vol. II A Personal Narrative
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The mineral assemblage comprises quartz, K-feldspar, albitic plagioclase, white mica, apatite, tourmaline and garnet.
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The spring 2005 collection features thin fourteen-karat-gold strands interlaced with small garnets, emeralds, pink tourmalines, and other stones.
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Extensive alterations of the country rock in the way of silicification and sericitization, and the presence of minerals like garnet, tourmaline, diopside, and others, known to be commonly deposited by the same hot solutions which make many ore deposits, may furnish a clue for exploration below.
The Economic Aspect of Geology
